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To do this all you need to do is click on the track and on the box on the right labeled FX, change the number to a free channel on the mixer.
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In the image below, you can see we’ve connected this track named “Lex808_1” with channel 9 in the mixer. This is the most important part of exporting stems in FL Studio and you should do this slowly and carefully.
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First thing you need to do is make sure each track in your song is connected to a separate channel in the mixer.
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